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Note Employee benefits (Accumulated other comprehensive loss expected to be recognized as components of net periodic benefit cost) (Detail) $ in Thousands | Dec. 31, 2018 USD ($)
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Pension Plans |
Defined Benefit Plan Disclosure |
Prior service (cost) credit | $ 0
Net actuarial loss | 23,506
OPEB Plan |
Defined Benefit Plan Disclosure |
Prior service (cost) credit | 0
Net actuarial loss | $ 0

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